promise1.es6

Promise.resolve(process.hrtime())
    .then(returnAPromise)
    .then(returnAValue)
    .then(returnAPromise)
    .then(throwAnException)
    .catch(handleExceptionAndReturnPromise)
    .then(returnAPromise)
    .then(throwAnException)
    .catch(handleFinalException)

function returnAPromise(value) {
    console.log(value);

    return Promise.resolve(process.hrtime());
}

function returnAValue(value) {
    console.log(value);
    return process.hrtime();
}

function handleFinalException(error) {
    console.log("all done", error);
}

function throwAnException(value) {
    console.log(value, "about to throw!");
    throw "exception thrown!";
}

function handleExceptionAndReturnPromise(error) {
    console.log(error);

    return Promise.resolve(process.hrtime());
}